Match the following. Match the items in the left column to the items in the right column. increase nerve activity 1.

reduce nerve activity2.

relieve pain and suppress coughing and diarrhea inhalants 3.

alter one's sense of reality depressants 4.

breathed into the body narcotics 5.

stimulants

hallucinogens

inhalants

depressants

narcotics

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The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)

Ithink it’s d. that should be correct.